Ruprecht 87

(MWSC 1783)

0.15 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.31

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 17

Radius (P>50% members) 9.0 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very low quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Ruprecht 87 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very distant Moderate extinction Intermediate age

Data

🔍 Search references for Ruprecht 87 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	153.888	-50.716	0.197	-6.236	3.229	–
Just et al.	2023	153.864	-50.706	–	–	–	–
Kharchenko et al.	2016	153.864	-50.706	–	–	–	–
Dias et al.	2014	153.883	-50.717	–	-5.91	1.23	–
Kharchenko et al.	2013	153.87	-50.71	–	-8.2	6.85	–
Dias et al.	2002	153.883	-50.717	–	-5.91	1.23	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	Bfr	BSS
Just et al.	2023	–	–	–	966	–	300	–	–
Kharchenko et al.	2016	5.25	1.42	–	966	–	–	–	–
Kharchenko et al.	2013	5.25	1.42	–	966	–	–	–	–
Dias et al.	2002	5.25	1.42	–	966	–	–	–	–

Visualization

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